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                  <p><small><a name="what_is_zst_format"></a>PeaZip
is a free cross-platform file compressor utility that provides an
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FreeArc,
PAQ, UPX, ZSTD... free alternative to WinRar, WinZip </small><small>and
similar
proprietary software</small><small>.<br>
- Create 7Z, ARC, BR, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ,
ZIP, ZST
files<br>
- Open and extract ACE, ARJ, CAB, DMG, ISO, LHA,
RAR, UDF, ZIPX files and more,</small><small> over 200 archive types
supported</small><small><br>
Features of PeaZip includes: </small><small> </small><small>archives
opener and extractor, manage Zstandard format, </small><small>batch
creation
and </small><small>extraction </small><small>of multiple
archives at once, </small><small>convert files, </small><small>create
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            <td colspan="1" rowspan="1" style="vertical-align: top;"> <br>
            <h1 style="text-align: center;"><big><big><big><a
 name="zstd"></a>What is ZST format, Zstandard compressed files<br>
            </big></big></big></h1>
            <br>
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            <div> </div>
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                  <td style="vertical-align: top;">
                  <ul>
                    <li>
                      <p><a href="#zst_compressed_files">WHAT ARE ZST
FILES, FACEBOOK'S ZSTANDARD COMPRESSION ALGORITHM<br>
                      </a></p>
                    </li>
                  </ul>
                  </td>
                  <td style="vertical-align: top; width: 128px;">
                  <h2><img title="What is .ZST extension"
 alt="zst extension" src="file-format/file-format.png"
 style="width: 96px; height: 96px;" align="right"></h2>
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 style="background-color: rgb(255, 255, 255); vertical-align: top;">
            <div style="text-align: left; color: rgb(0, 0, 0);">
            <h2><big><big><big><a name="zst_compressed_files"></a><a
 href="#zstd">What
are ZST
files, Facebook's Zstandard compression algorithm</a></big></big><br>
            </big></h2>
            </div>
            <br>
            <div style="text-align: left;"> </div>
            <div style="text-align: left;"> </div>
            <a name="what_is_a_zst_file"></a><span
 style="font-weight: bold;">ZST </span>file extension
designates a <span style="background-color: rgb(255, 238, 221);">pure
data compression format</span>, not
providing file archival or encryption features.<br>
The input data is compressed with Facebook's Zstandard algorithm, a new
flexible design that at lower compression settings provides <a
 href="peazip-compression-benchmark.html">faster than Deflate</a> (Gzip
/ ZIP) performances and at highest compression settings provides
compression ratio comparable with 7-Zip's LZMA (.7Z).<br>
A goal of Zstandard design is near-real time extraction, performing
very fast (faster than <a href="gzip-files.html">Gzip</a> / <a
 href="zip-file-format.html">ZIP</a>) and with small variations in
decompressing ZST created with lowest or higher compression settings.<br>
            <br>
            <a name="zstandard_compression_specs"></a>Zstandard
implementation, ZSTD, making use of multi-threading parallelism and on
recent multi-core CPUs currently outperforms single-threaded Brotli
implementation at similar levels of compression.<br>
            <br>
Due to&nbsp; the by-design limitation of being a single file
compressor, PeaZip uses Zstandard compression cascaded with TAR
archiving in order to consolidate multiple input files / folders into a
single container, which is then compressed originating a .tar.zst file.
            <br>
Zstandard-compressed tar archives are sometimes identified as .tzst
instead.<br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="24" cellspacing="0">
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 style="vertical-align: top; text-align: right; width: 128px;">
                  <h2><span style="font-weight: bold;"><img
 title="What is ZST file format, Zstandard compression algorithm"
 alt="what is a zst file" src="file-format/quotes.png"
 style="width: 32px; height: 32px;"></span></h2>
                  </td>
                  <td style="vertical-align: top; font-style: italic;">
                  <h3><span style="font-weight: bold;">When is
Zstandard
compression
recommended</span></h3>
Zstandard algorithm is very flexible and can provide a wide range of
compression levels with reasonable performances, but excels when fast
compression is desired, reaching Deflate-level compression ratio in
significantly shorter times.<br>
Also, extraction is very fast and outperforms alternatives, making it
an excellent choice where extraction speed are important and where
decompression tasks are more common than compression ones.<br>
                  </td>
                  <td style="vertical-align: bottom; width: 128px;"> <img
 title="ZST format features and specifications."
 alt="zst files features" src="file-format/quotes-inverse.png"
 style="width: 32px; height: 32px;"> </td>
                </tr>
              </tbody>
            </table>
            <a name="bz2_format_specifications"></a>Read more about
.zst file type on <a target="_blank"
 href="https://facebook.github.io/zstd/">ZSTD
official repository<img title="Facebook's ZSTD repository"
 alt="Zstandard online" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, and <a
 target="_blank" href="https://en.wikipedia.org/wiki/Zstandard">Zstandard<img
 title="wiki Zstandard algorithm" alt="ZSTD compression"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> entry on
Wikipedia.<br>
            <br>
            <span style="font-weight: bold;"></span>PeaZip features <a
 href="zstandard-compression-utility.html">creation and
extraction of Zstandard files</a> on Windows and Linux systems using
Facebook's ZSTD implementation, and can read (open, test and
extract) and write (compress to) ZST file type.<br>
            <h2><img title="Zstandard compression"
 alt="what is Zstandard compression algorithm" src="add-to-archive.png"
 style="width: 100px; height: 45px;"></h2>
            <h3><img
 title="ZST compressed format features and specifications"
 alt="ZST format specifications" src="extract-archive.png"
 style="width: 112px; height: 45px;"></h3>
            <br>
            <table
 style="background-color: rgb(72, 136, 248); width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="1">
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                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <table style="width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
                          <tbody>
                            <tr>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
                              <h3><big><big><big><big><big><a
 name="zst_file_extension"></a>.ZST</big></big></big></big></big></h3>
                              </td>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Authors
Yann Collet, Przemys&#322;aw Skibi&#324;ski (Facebook), 2015<br>
limited to 1 single file as input<br>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>SPEED <img
 alt="Zstandard compression format specs" title="ZSTD compression speed"
 src="zip-files/star5.png" style="width: 80px; height: 16px;"></big></h4>
ZST format can reach very high compression and decompression speed.
Designed making use of parallelism of modern CPUs, ZSTD implementation
is significantly faster than Deflate while providing comparable
compression levels, and is still efficient at higher compression levels.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>COMPRESSION
RATIO <img src="zip-files/star4.png"
 title="Zstandard compression performances"
 alt="Zstandard algorithm specs" style="width: 80px; height: 16px;"></big></h4>
Zstandard flexible compression scheme allows to provide both very fast
compression and to reach LZMA-like compression ratios at higher
compression settings.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <big>ADVANCED
OPTIONS <img alt="zstandard features" title="ZST format options"
 src="zip-files/star1.png" style="width: 80px; height: 16px;"></big><br>
ZST format is meant purely for providing fast data or single-file
compression, and lacks
archiving, encryption features by design.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
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                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="tar-file-format.html">WHAT ARE TAR FILES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="wim-files.html">WHAT IS MICROSOFT WIM FORMAT</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <small><small>&nbsp;</small></small><br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zip-file-format.html">WHAT IS ZIP FILE FORMAT</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="archive-file-formats-comparison.html">COMPRESSION FORMATS
COMPARISON</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="paq-file-format.html">ZPAQ FILE FORMAT</a><a
 href="tar-windows.html"><br>
                  </a></small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-solid-compression.html">SOLID COMPRESSION</a> </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="wim-files.html">BR VS ZST COMPRESSION</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <p> </p>
            <p><a href="peazip-help-faq.html">FAQ</a>
&gt; Archive file types &gt; What are ZST compressed files</p>
Topics and search suggestions about what is .ZST file format extension,
new Facebook's Zstandard fast compression
algorithm, what are ZSTD compressed files features and specifications
compared to Deflate / Gzip, and LZMA / 7Z:
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="6" cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> what is
zst file format,<br>
what
are zst files,<br>
zstandard vs brotli,<br>
zst file type specs,<br>
zst format features, <br>
Zstandard compression algorithm, </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> ZST
files
specifications,<br>
zstandard vs deflate,<br>
what are tar.zst files,<br>
files compressed with ZSTD,<br>
characteristics of ZSTD function,<br>
Zstandard algorithm specifications,<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> faq
about .zst extension, <br>
what is Facebook's Zstandard compression algorithm, <br>
fastest compression algorithm,<br>
Zstandard algorithm features,<br>
Facebook's ZST file type<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> faq
about zstd compressed files,<br>
what are zstd compressed files,<br>
Zstandard algorithm,<br>
ZSTD compression,<br>
zstd vs gzip speed comparison,<br>
Zstandard compressed files<br>
                  </td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(255, 255, 255); margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;">Tag Cloud <br>
            <span class="wrd free-rar0" id="open-extract-zst-files"> <a
 href="zstandard-compression-utility.html">ZST extractor</a></span> <span
 class="wrd free-rar1" id="download-zstandard-compression-utility"> <a
 href="zstandard-compression-utility.html">Zstandard compression utility</a></span>
            <span class="wrd free-rar3" id="zst-file-extension"> <a
 href="zst-compressed-file-format.html">ZST extension</a></span> <span
 class="wrd free-rar0" id="download-file-compression-app"> <a
 href="index.html">file compression utility</a></span> <span
 class="wrd free-rar1" id="zstd-compressed-files"> <a
 href="zst-compressed-file-format.html">ZSTD compressed files</a></span>
            <span class="wrd free-rar3"
 id="zstandard-compressed-file-type"> <a
 href="zst-compressed-file-format.html">Zstandard file format</a></span>
            <br>
            <span class="wrd free-rar1"
 id="brotli-file-compression-utility"> <a
 href="brotli-compression-utility.html">free Brotli compression utility</a></span>
            <span class="wrd free-rar3"
 id="brotli-br-compressed-file-type"> <a
 href="brotli-compressed-file-format.html">Brotli compressed file format</a></span>
            <span class="wrd free-rar1" id="tzst-tar-file-extension"> <a
 href="tar-file-format.html">TAR files</a></span> <span
 class="wrd free-rar3" id="gz-file-extension"> <a
 href="gzip-files.html">.GZ format</a></span> <span
 class="wrd free-rar1" id="how-to-open-rar-zip-files"> <a
 href="how-to-open-rar-tar-zip-files.html">how to open
rar tar zip zst
files</a></span> <br>
            <span class="wrd free-rar1"
 id="convert-brotli-zstandard-compressed-files"> <a
 href="convert-files.html">convert file type</a></span> <span
 class="wrd free-rar3" id="free-file-archiver-software"> <a
 href="index.html">free file
archiver</a></span> <span class="wrd free-rar2"
 id="free-zip-files-extraction-utility"> <a
 href="zip-files-utility.html">open ZIP files</a></span> <span
 class="wrd free-rar0" id="portable-rar-files-software"> <a
 href="peazip-portable.html">portable RAR TAR ZIP files software</a></span>
            <span class="wrd free-rar2" id="what-is-rar-file-extension"><a
 href="what-is-rar-file.html">RAR extension</a></span> <span
 class="wrd free-rar3" id="windows-tar-extraction"> <a
 href="tar-windows.html">TAR
file extraction</a></span> <br>
            <span class="wrd free-rar2" id="open-encrypted-rar-zip-file"><a
 href="extract-encrypted-files.html">extract encrypted
file</a></span> <span class="wrd free-rar3"
 id="download-free-rar-files-utility"> <a href="index.html">download
free RAR software</a></span> <span class="wrd free-rar0"
 id="open-source-encryption-software"> <a href="encrypt-files.html">how
to encrypt files</a></span> <span class="wrd free-rar2"
 id="extract-7z-files"> <a href="7zip-files-utility.html">extract 7Z
files</a></span> <span class="wrd free-rar3"
 id="free-rar-files-extraction-utility"> <a href="free-rar.html">free
RAR files opener</a></span> <br>
            <span class="wrd free-rar2" id="what-is-zip-file-type"> <a
 href="zip-file-format.html">what is
ZIP format</a></span> <span class="wrd free-rar1"
 id="file-compression-utility"> <a href="index.html">file compression
utility</a></span> <span class="wrd free-rar0" id="extract-zipx-files">
            <a href="zipx-files-software.html">extract ZIPX archives</a></span>
            <span class="wrd free-rar3" id="file-compression-benchmark">
            <a href="peazip-compression-benchmark.html">file
compression benchmark</a></span> <span class="wrd free-rar2"
 id="solid-compression-option"> <a
 href="what-is-solid-compression.html">what is solid compression</a></span>
            <br>
            <span class="wrd free-rar0" id="what-is-compressed-file"> <a
 href="what-is-zip-file.html">what is a compressed file</a></span> <span
 class="wrd free-rar1" id="archive-formats-comparison"> <a
 href="archive-file-formats-comparison.html">archive
format comparison</a></span> <span class="wrd free-rar3"
 id="pea-file-format"> <a href="pea-file-format.html">PEA encrypted
file format</a></span> <span class="wrd free-rar0"
 id="linux-file-compression-utility"> <a href="peazip-linux.html">linux
file compression utility</a></span> <span class="wrd free-rar3"
 id="windows-tar-files-opener"> <a href="tar-windows.html">TAR files
opener</a></span> <br>
            <span class="wrd free-rar3"
 id="fastest-file-compression-algorithms"> <a
 href="peazip-compression-benchmark.html">what is the fastest
compression
algorithm</a></span> <span class="wrd free-rar0"
 id="gzip-deflate-compression-utility"> <a href="gzip-utility.html">GZip
compressor</a></span><span class="wrd free-rar1"
 id="7z-lzma-compression-algorithm"> <a href="7z-file-format.html">7Z
LZMA</a></span><span class="wrd free-rar3"
 id="brotli-zstd-speed-comparison"> <a
 href="fast-compression-benchmark-brotli-zstandard.html">BR and ZST
compression comparison</a></span><br>
            </td>
          </tr>
        </tbody>
      </table>
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      <td
 style="vertical-align: top; background-color: rgb(243, 242, 241);">
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            <td style="vertical-align: top; width: 25%;"><small> <img
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 style="width: 129px; height: 2px;"><br>
            <a name="zst_file_format"></a>DOWNLOADS<br>
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